State space

The state-space is built as a graph using an simple API and take up very little space compared to a matrix representation. It handles millions of vertices (states) and edges (transitions) and is munch faster than the traditional matrix-based computation relying on (sparse) matrix inversion and exponentiation.

Consider this model: Rabbits jump between two islands at a rate of one. The two islands are flooded at rates 2 and 4 drowning all rabbits on the flooded island. The end (absorbing) is when no more rabbits are left.

Rabbit island model.

In ptdalgorithms, each state is represented by a sequence of integers. To represent states in the rabbit model, we only need two such integer to represent the number of rabbits on the left and right islands. Laid out as in the above picture, the states are:

[2, 0]    [0, 1]

[1, 1]    [0, 0]

[0, 2]    [1, 0]

To skip some of the boilerplate you can pass a callback function and an initial state to Graph. The callback function must take as the only argument a list of int representing a state, and return: a list of tuples that each represent reachable child state and the associated transition rate. To create a callback function, just think of rules of your model and ask yourself:

Given some specific state, what are the allowed transitions to other states and at what rates to these transititons occur?

Here is an example for our rabbit model: If the current state is “two rabbits on the left island” ([2, 0]), the reachable states are: “one rabbit on each island” ([1, 1]) if one rabbit jumps and and “no rabbits” ([0, 0]) if the island is flodded. So if the callback function is called like this:

rabbit_model([2, 0])

it should return

[([1, 1], 1), ([0, 0], 2)]

Together, the callback and initial state fully specifies the model. Here is what they look like for the rabbit model:

nr_rabbits, flood_left, flood_right = 2, 2, 4

def rabbit_islands(state):
    if not state.size:
        ipv = [([nr_rabbits, 0], 1)]
        return ipv
    nr_left, nr_right = state
    reachable = []
    if state[0] > 0:
        reachable.append(([nr_left-1, nr_right+1], 1))
        reachable.append(([0,         nr_right  ], flood_left))
    if state[1] > 0:   
        reachable.append(([nr_left+1, nr_right-1], 1))
        reachable.append(([nr_left,   0         ], flood_right))
    return reachable

If you know the coalescent, this introduction may be more motivating

If you know the coalescent, this introduction may be more motivating

To then build the state space all you need to do is:

import ptdalgorithms as ptd

graph = ptd.Graph(callback=rabbit_islands)

Plot it to make sure it looks as expected. The gray S state is the “starting state” immediately transiting one or more model states where the model is allowed to begin. In the rabbit model, S goes to state 2,0 with probability 1 because the model can only begin there. The end (absorbing) state 0,0 is also colored gray.

graph.plot()
---------------------------------------------------------------------------
RecursionError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

RecursionError: maximum recursion depth exceeded

During handling of the above exception, another exception occurred:

RecursionError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

RecursionError: maximum recursion depth exceeded while calling a Python object

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:49, in _plot_graph(*args, **kwargs)
     48 try:
---> 49     _plot_graph(*args, **kwargs)
     50 except Exception as e:

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

AttributeError                            Traceback (most recent call last)
    [... skipping hidden 1 frame]

Cell In[19], line 1
----> 1 graph.plot()

File ~/PtDAlgorithms/src/ptdalgorithms/__init__.py:92, in Graph.plot(self, *args, **kwargs)
     84 """
     85 Plots the graph using graphviz. See plot::plot_graph.py for more details.
     86 
   (...)     90     _description_
     91 """
---> 92 return plot._plot_graph(self, *args, **kwargs)

File ~/PtDAlgorithms/src/ptdalgorithms/plot.py:51, in _plot_graph(*args, **kwargs)
     50 except Exception as e:
---> 51     subprocess.check_call(['dot', '-c']) # register layout engine
     52     _plot_graph(*args, **kwargs)

AttributeError: module 'asyncio.subprocess' has no attribute 'check_call'

During handling of the above exception, another exception occurred:

RecursionError                            Traceback (most recent call last)
File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:3639, in InteractiveShell.run_ast_nodes(self, nodelist, cell_name, interactivity, compiler, result)
   3638     asy = compare(code)
-> 3639 if await self.run_code(code, result, async_=asy):
   3640     return True

    [... skipping hidden 1 frame]

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2182, in InteractiveShell.showtraceback(self, exc_tuple, filename, tb_offset, exception_only, running_compiled_code)
   2178     return isinstance(
   2179         val, BaseExceptionGroup
   2180     ) or contains_exceptiongroup(val.__context__)
-> 2182 if contains_exceptiongroup(value):
   2183     # fall back to native exception formatting until ultratb
   2184     # supports exception groups
   2185     traceback.print_exc()

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val)
   2177     return False
   2178 return isinstance(
   2179     val, BaseExceptionGroup
-> 2180 ) or contains_exceptiongroup(val.__context__)

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val)
   2177     return False
   2178 return isinstance(
   2179     val, BaseExceptionGroup
-> 2180 ) or contains_exceptiongroup(val.__context__)

    [... skipping similar frames: InteractiveShell.showtraceback.<locals>.contains_exceptiongroup at line 2180 (2970 times)]

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val)
   2177     return False
   2178 return isinstance(
   2179     val, BaseExceptionGroup
-> 2180 ) or contains_exceptiongroup(val.__context__)

RecursionError: maximum recursion depth exceeded

During handling of the above exception, another exception occurred:

RecursionError                            Traceback (most recent call last)
File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/async_helpers.py:128, in _pseudo_sync_runner(coro)
    120 """
    121 A runner that does not really allow async execution, and just advance the coroutine.
    122 
   (...)    125 Credit to Nathaniel Smith
    126 """
    127 try:
--> 128     coro.send(None)
    129 except StopIteration as exc:
    130     return exc.value

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:3394, in InteractiveShell.run_cell_async(self, raw_cell, store_history, silent, shell_futures, transformed_cell, preprocessing_exc_tuple, cell_id)
   3390 # Execute the user code
   3391 interactivity = "none" if silent else self.ast_node_interactivity
-> 3394 has_raised = await self.run_ast_nodes(code_ast.body, cell_name,
   3395        interactivity=interactivity, compiler=compiler, result=result)
   3397 self.last_execution_succeeded = not has_raised
   3398 self.last_execution_result = result

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:3658, in InteractiveShell.run_ast_nodes(self, nodelist, cell_name, interactivity, compiler, result)
   3656     if result:
   3657         result.error_before_exec = sys.exc_info()[1]
-> 3658     self.showtraceback()
   3659     return True
   3661 return False

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2182, in InteractiveShell.showtraceback(self, exc_tuple, filename, tb_offset, exception_only, running_compiled_code)
   2177         return False
   2178     return isinstance(
   2179         val, BaseExceptionGroup
   2180     ) or contains_exceptiongroup(val.__context__)
-> 2182 if contains_exceptiongroup(value):
   2183     # fall back to native exception formatting until ultratb
   2184     # supports exception groups
   2185     traceback.print_exc()
   2186 else:

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val)
   2176 if val is None:
   2177     return False
   2178 return isinstance(
   2179     val, BaseExceptionGroup
-> 2180 ) or contains_exceptiongroup(val.__context__)

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val)
   2176 if val is None:
   2177     return False
   2178 return isinstance(
   2179     val, BaseExceptionGroup
-> 2180 ) or contains_exceptiongroup(val.__context__)

    [... skipping similar frames: InteractiveShell.showtraceback.<locals>.contains_exceptiongroup at line 2180 (2971 times)]

File ~/PtDAlgorithms/.pixi/envs/default/lib/python3.11/site-packages/IPython/core/interactiveshell.py:2180, in InteractiveShell.showtraceback.<locals>.contains_exceptiongroup(val)
   2176 if val is None:
   2177     return False
   2178 return isinstance(
   2179     val, BaseExceptionGroup
-> 2180 ) or contains_exceptiongroup(val.__context__)

RecursionError: maximum recursion depth exceeded

Off to the races

Now the world is at your command. To scratch the surfance you can compute the expected time to rabbit extinction:

graph.expectation()
0.5038265306122448

but there is so much more you can do to explore your rabbit model. For a full exposé of the API using the rabbit example see the full python API example.

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Learning more

Citing ptdalgorithms

Graph-based algorithms for phase-type distributions, Statistics and Computing (2022)